Tank



I. C. DOUGLASS.

TANK.

' APPLlCATlON FILED 050.26. 1918.

PatentedJune 8, 1920.

INVENTOR IRA. C. DOUGLASS, OF ROCHESTER, N EW YORK, ASSIGNOR T0 OFROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

TANK.

Specification of Letters Patent.

Patented June 8, 1920.

Application filed December 26, 1918. Serial No. 268,253.

To all whom it may concern:

Be it known that I, IRA O. DOUGLASS, of Rochester, in the county ofMonroe and State of New York, have invented certain new and usefulImprovements in Tanks; and I do hereby declare the'followmg to be afull, clear, and exact descriptionof the same, reference being had tothe accompanying drawings, forming a part of this specification, and tothe reference numerals marked thereon.

The object of my invention is to construct a steel tank having an innerwall lined with enamel or glass and an outer wall spaced from the innerwall and forming a jacket for a refrigerating liquid and means for compensating for the uneven expansion and contraction between the inner andouter walls. More specifically, the object of my invention is toconstruct a metal tank having a tubular outlet and an outer wall forminga jacket for a refrigerating liquid and a ring of p11- able materialinserted in the outer walland surrounding the tubular outlet and adaptedto compensate for expansion or contraction due to changes intemperature. To these and other ends the invention resides in certainimprovements and combinations of parts all as will be hereinafter morefully de scribed, the novel features being pointed out in the claims atthe end of the specification.

In the drawings:

Figure 1 is a detail section through the bottom of the tank, constructedaccording to my invention, and

Fig. 2 is a bottom plan view of the same.

Similar reference numerals throughout the several views indicate thesame parts.

The tank comprises an inner wall 1 of steel or other suitable metalhaving a lining 2 of porcelain or glass for protecting the wall 1 fromthe action of acids or other liquids contained in the tank. In thebottom of the tank, the wall 1 is provided with an opening and welded orotherwise secured to wall 1 and surrounding the opening, is a tubularoutlet 3 threaded at' its lower end to receive a stop cock or otheroutlet conductor. The porcelain lining of the tank is extended throughthe outlet tube 3. Surrounding the outlet tube 3 and spaced therefrom isa wall 4 substantially parallel with the wall of the outlet tube 3 andprojecting downwardly from the inner wall 1 to which it is secured bywelding or other suitable means.

The member't is cylindrical in form and at its lower end the wall isenlarged as at 5 and tapped at suitable intervals for the reception ofbolts (3, the purpose of which will hereinafter appear. Surrounding thesides and bottom of the inner wall 1 of the tank is an outer wall 7spaced therefrom thereby constituting a closure and adapted to receiveand hold a refrigerating or other liquid in contact with the inner wall1 of the tank. The wall 7 is preferably constructed of metal and isprovided with a circular opening somewhat larger in diameter than thediameter of the cylindrical member 4:. Adjacent this circular openingthe wall 7 is provided with apertures suitably spaced from each otherand adapted to receive the bolts 8. The space between the opening in theouter wall 7 and the outer or lower end of the member 1 is closed bymeans of a ring 9 of pliable material such as lead or copper, secured atits edges to the outer wall and to the outer-end of the member Forretaining the ring 9 in position, I employ suitable retaining means bymeans of which it is clamped firmly in contact with the members 7 and 4.The ring 9 is provided adjacent to its outer periphery with aperturesspaced to correspond with the apertures of the wall 7 for receiving thebolts 8. The bolts 8 are inserted through the apertures in thewall 7 andin the ring 9 and receive a retaining ring 10 also apertured tocorrespond to the apertures in the wall 7 and at their lower or outerends and bolts 8 receive nuts adapted to clamp the pliable ring 9securely between the ring 10 and the wall 7. The pliable ring 9 is alsoapertured adjacent its inner periphery and retaining ring 11 overliesthe same and is apertured to correspond with apertures in the member 5.The bolts 6 pass through the apertures in the ring 11 and take into thetapped openings in the member 5 and are adapted to securely clamp theinner margin of the ring 9 between the ring 11 and the member a. Thepliable ring 9 may be bent or corrugated as indicated in the drawingsand serves to permit free expansion or contraction of the inner andouter walls relatively to each other when the tank is subjected tochanges in temperature.

It will be noted that I have constructed a tank having inner and outerwalls providing a space between them for a refrigerating liq- THEPFAUDLER COMPANY,

uid or it may be a liquid adapted to apply temperature to the contentsof the tank. These liquids will cause an expansion or contraction of the.wallsv in contact therewith. The provision of the pliable ring of metalin the outer wall permits the free expansion or contraction of the outerwall relatively to the inner wall. The tank is lined with enamel orglass fused to the innersurface of the inner wall or otherwise appliedthereto. in temperature without providing means for compensating forexpansion and contraction of the walls would be liable to cause buc:kling or warping of the walls which would destroy or'crack the lining ofthe inner wall unless some provision were made compensating for thisexpansion and contraction. By providing a pliable seam such as my ring 9described above in the wall of the tank, free expansion and contractionof the material of the wall is permitted without causingexcessive'strain or tension. It will be noted that since the ring ofpliable material is inserted between the outer wall and the cylindricalmember 4: formed integral with the inner wall it is in effect insertedbetween said walls and adapted to compensate for uneven ex pansion andcontraction between said walls.

WVhile I have used the term refrigerating liquid throughout thespecification and claims in referring to the material to be contained inthe jacket or the space between'the inner and outer walls, l do notintend to limit myself to any particular material as a fluid forapplying heat such as hot water or steam or a refrigerating fluid suchas ammonia may be employed \VltllOLlt departing from the spirit or copeof the invention.

I claim as my invention:

1. A tank comprising an inner wall having an outlet portion and afrangible lining, a cylindrical wall thereon and surrounding and spacedfrom said outlet portion, an outer Changes and contraction of said outerwall.

2. A tank comprising an inner wall having an outlet portion andfrangible, lining,

a cylindrical wall thereon and surrounding and spaced from said outletportion, an outer w all spaced from said inner wall and forming a jacketfor heating or cooling media, and a corrugated ring of pliable materialsecured to said cylindrical wall and adjacent edge of'the outer wall andadapted to permit of free expansion and contraction of said outer wall.

3. A tank comprising an inner wall having a tubular extension thereon, acylindrical wall also thereon surrounding and spaced from said tubularextension, an outer wall spaced from said inner wall and forming ajacket for heating or cooling media, and a section. of pliable materialconnecting said outer wall with said cylindrical wall and adapted topermit the free expansion and contraction of said outer wall.

4. A tank comprising an inner wall and an outer wall spaced therefromand adapted to act as a jacket for heating or cooling media, saidinnerwall having a tube extending through said outer wall, and an expansibleconnection between said inner and outer walls surrounding said tube.

5. A tank comprising an inner wall and an outer wall spaced from saidinner wall to provide a jacket for heating or cooling media, a tubularextension on said inner wall, and an expansible connection between saidouter and inner walls, surrounding said tubular extension.

IRA G. DOUGLASS.

